Patents by Inventor Charles H. Doherty, III

Charles H. Doherty, III has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4391086
    Abstract: An apparatus to recover and restring a broken threadline in a processing multiple running threadlines includes a waste suction device to collect the broken threadline, an interlacing jet to splice the broken threadline onto a running threadline, a forwarding jet to maintain tension on the broken end, a coanda surface at the exit end of the forwarding jet to deflect the broken end into the suction device. While the broken end travels over a notched swing pin to the waste suction device the swing pin is moved to contact the running end which is pulling the broken end spliced to it forward. The action of the swing pin and a pin or cutter blade at the exit of the forwarding jet serves to sever the filaments of the tensioned broken-end threadline which results in a double end running to a sucker gun at the windup. The ends are then separated, placed in the proper guides and restrung.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: July 5, 1983
    Assignee: E. I. Du Pont de Nemours & Co.
    Inventor: Charles H. Doherty, III
  • Patent number: 4197020
    Abstract: A spinneret assembly that includes a filtration cavity and a spinneret has a plate between the cavity and spinneret. The plate has an enclosed channel connecting the cavity and spinneret. The channel contains a plurality of stationary mixing elements and lies in a plane substantially parallel with the spinneret.
    Type: Grant
    Filed: November 30, 1972
    Date of Patent: April 8, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Charles H. Doherty, III